Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AGS813-S10 |
| Brand | Yokogawa Electric Corporation |
| Product Type | Servo Module |
| System Compatibility | Yokogawa CENTUM DCS turbomachinery control platform |
| Origin | Japan |
| Weight | Approximately 1.0 kg to 1.2 kg |
| Dimensions | Not specified in available technical data |
| Operating Temp | 0 deg C to 55 deg C |
| Power Consumption | Approximately 10 W |
| Control Cycle | 5 ms |
| Position Feedback Inputs | 4 isolated channels |
| Input Signal Type | LVDT or 1 to 5 VDC |
| LVDT Wiring Support | 3-wire, 5-wire, and 6-wire configurations |
| LVDT Excitation | 5 Vrms, 30 mArms maximum |
| Excitation Frequency | Selectable 2.8 kHz, 3.0 kHz, and 3.2 kHz |
| Servo Analog Outputs | 2 isolated channels |
| Output Range | Selectable +/-25 mA or +/-50 mA |
| Digital Inputs | 2 channels |
| Power Outputs | 4 channels |
| Operating Voltage | 24 VDC +/-10% |
| External Supply Requirement | +11.4 to +13.2 VDC and -13.2 to -11.4 VDC, 0.3 A each |
| Accuracy | +/-1% for LVDT input; +/-4 mV for voltage input |
| Temperature Drift | +/-0.4% / 10 deg C for LVDT; +/-4 mV / 10 deg C for voltage input |
| Humidity Range | 5% to 95% RH, non-condensing |
| Redundancy Support | Supports dual-redundant configuration |
Yokogawa DCS Signal Processing and Servo Control Characteristics
The AGS813-S10 processes high-speed servo control signals through dedicated hardware execution paths. Moreover, the module integrates PID function blocks to perform local control calculations without transferring every loop operation to the main Field Control Station (FCS).
The module supports isolated LVDT measurement channels for turbine valve position feedback. Therefore, it can directly handle excitation generation, position signal conversion, and servo actuator output regulation within the turbomachinery control loop.
For Yokogawa CENTUM instrumentation systems, signal integrity depends on proper channel-to-channel isolation and stable analog measurement circuits. In addition, the module architecture supports deterministic 5 ms execution cycles for fast mechanical control response.
Frequently Asked Questions
Q: What feedback signals can the AGS813-S10 process?
A: The module processes four isolated position feedback channels using LVDT signals or standardized 1 to 5 VDC voltage inputs.
Q: Does the AGS813-S10 provide direct servo valve control output?
A: Yes. The module provides two isolated analog outputs with selectable +/-25 mA or +/-50 mA ranges for servo drive circuits.
Q: Can the AGS813-S10 operate in redundant configurations?
A: The module supports dual-redundant installation arrangements for systems requiring duplicated servo control hardware.
Field Installation Guidelines
Install the AGS813-S10 according to the Yokogawa CENTUM hardware installation manual and approved cabinet wiring practices.
Use shielded cables for LVDT feedback and analog servo output connections. Connect cable shields according to the system grounding design to reduce electrical noise interference.
Separate low-level feedback wiring from high-current actuator and power supply cables. Verify terminal assignments, supply polarity, and external excitation wiring before energizing the module.
Confirm that the module firmware version matches the CENTUM system configuration before commissioning. Perform loop verification tests for LVDT feedback scaling, servo output direction, and valve position response.
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